delonnewman / multiple-dispatch

An implementation of multiple dispatch for Ruby. Also known as generic-functions or multi-methods.

MultipleDispatch

An implementation of MultipleDispatch for Ruby

See Also

• Dylan
• CLOS
• Julia
• Raku
• Clojure

Maintainer

Delon Newman [email protected]

multiple-dispatch's Issues

CLOS

https://gigamonkeys.com/book/object-reorientation-generic-functions.html

Syntax

# cron.rb
module Cron
  include MultipleDispatch

  class Job; end
  class HTTPJob < Job; end
  class ScriptJob < Job; end
  
  multi HTTPJob
  def run(job)
    puts "Run #{job} via http"
  end

  multi ScriptJob
  def run(job)
    puts "Run #{job} via script interface"
  end

  multi Job
  def run(job)
    puts "Run #{job} via default script interface"
  end

  multi Any
  def run(job)
    puts "Not a valid job type: #{job}"
  end
end